4 Generation Circle Diagram: |
| Philippina de Nijs Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Johannes Christianus van der Spek < Maria van der Spek |
| Johannes Christianus van der Spek Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Philippina de Nijs < Maria van der Spek |
| Maria van der Spek Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Willem van der Harst < Gerardus van der Harst |